Table 5. Antibacterial activity test for placebo, propolis extract and PESE formulation (n=3) .
| Parameters | Escherichia coli ATCC 8739 | Pseudomonas aeruginosa 9027 | Staphylococcus aureus 25923 | Salmonella typhimurium 14028 | ||||||||
| Placebo | Propolis extract | PESE | Placebo | Propolis extract | PESE | Placebo | Propolis extract | PESE | Placebo | Propolis extract | PESE | |
| MIC (mg/mL) | 1.16 | NA | 1.17 | NA | NA | NA | 4.65 | 4.68 | 2.34 | NA | NA | NA |
| MBC (mg/mL) | 2.33 | NA | 2.34 | NA | NA | NA | 9.35 | 9.37 | 4.68 | NA | NA | NA |
| Percentage of cell death (%) | 47.50 | NA | 56.67 | NA | NA | NA | 48.26 | 30.96 | 57.36 | NA | NA | NA |
NA: Not Active, Placebo: Formulation contains only the vehicle.